摘要
利用大型有限元通用软件ANSYS/LS-DYNA及其并行运算功能,提出了一种大跨度斜拉桥在地震作用下考虑SSI效应的三维整体时程反应分析方法,比较了考虑桥梁结构线性和非线性两种情形的计算结果,并对其计算效率进行了探讨。
By using of finite element software ANSYS / LS-DYNA and its parallel computing function,a 3-D seismic response analysis method for long-span cable-stayed bridge considering soil-structure interaction is presented in this paper.The calculated results with the linear and nonlinear bridge material are compared,and calculation efficiency of both cases are also discussed.
引文
[1]Penzien J,Scheffey C F,Parmelee R A.Seismic analysis of bridges on long piles[J].Proc.ASCE,1964,90(EM3):223-254.
[2]王浩,杨玉冬,李爱群,等.土-桩-结构相互作用对大跨度CFST拱桥地震反应的影响[J].东南大学学报,2005,13(5):433-437.
[3]范立础,卓卫东.桥梁延性抗震设计[M].北京:人民交通出版社,2001.
[4]孙利民,张晨南,潘龙,等.桥梁桩土相互作用的集中质量模型及参数确定[J].同济大学学报,2002,30(4):410-415.
[5]Yan L,Elgamal A,Yang Z,Conte J P.Bridge-foundation-ground system:a 3D seismic response model[C]∥Proceedings of the Third Interna-tional Conference on Earthquake Engineering,2004,20:80-84.
[6]陈清军,姜文辉,李哲明.桩-土接触效应对桥梁结构地震反应的影响[J].力学季刊,2005,26(4):609-613.
[7]廖振鹏.工程波动理论导论[M].北京:科学出版社,2002.
[8]刘晶波,吕彦东.结构-地基动力相互作用问题分析的一种直接方法[J].土木工程学报,1998,31(3):55-64.